Improvement in keyless padlocks



W1 LSON BOHANNAN.

KELESS LOOK. 4 11221 1 PAENTED FEB 28 1871 WI+NESSES. INVENTOR.

, /%W WM finitrd %tatez WILSON BOHANNAN, OF BROOKLYN, NEWYORK, ASSIGNOR TO AMERIOAN SEAL-LOCK COMPANY, OF NEW YORK GITY.

Letters Patent No. 112,211. dated February 28, 1871.

IMPROVEMENT IN KEYLESS PADLOCKS.

'.lhe Schenle raierxed to in these I.etters Patent and maklng part: et the lame.

I, Wrnson Bownm, of Brooklyn, in the State of New York, have invented a new and improved Keyless Look, of whichthe following is a specific tien.

Nature and Objects-of the Ihvention.

Description of the Accommzyzny Drawiny.

Figure 1 is a front view of my improved look with the face-plate removed, and With the parts in their locked condition.

Figure 2 ,is a front view, partly in section, showingthe ends of the shackle separated and reversed ready to be withdrawn, the tumbler being retrcted.

Figure 3 is a horizontal section at x :13, fig.y1.

Figure 4 is a view of the shackie detached.

Geneml Description.

A is the casing of the look, which is preferably of cast metal, and is provided with a cap or face-plate, not here shown, to be permanently secured to the .body of thecase in any usual and efficient manner,

which Will prevent the removal of the said face-plate without deteetion.

B is a sliding bolt, guided by a stump, C, and pressed forward by a spring, D, so as to engage with the end 6 of the shackle E, which is suitably notched to receive the said bolt, as is represented.

F is a tumbler, pivoted on a stud, G, and adapted to fit or engage behind the bolt B when the parts are in the locked condition represented in fig. 1,' so that the bolt cannot possibly release the shackle until the tumbler has been retracted.

The spring D may be mounted on the same stud G which forms the pivot-ot the tumbler F, the ripper or horizontal part of the said spring serving t0 press down the nose or forward end of the tumble1.

The heel of the tumbler, when the parts are in the positions shown in fig. 1, engages within a notch in the end 6 of the shackle E.

H is a dog, pivoted on a stud, I, and employed to throw up the tumhler when, after the shacklehas beencut, its shorter end e is pressed down upon the tail of the said dog.

The longer end e of the shackle, by resting npon the base of the oasiug, prevents any such pressure upon the tal of the dog until the shackle has been out.

The shackles may of course be provided With seals or staimped With any private mark or device, so as a to prevent the proper one being removed and another put in its place by an unauthorized party without deteetion.

The modes of providing for the identification of a look or.any part thereof are so various and many or" them so well known that I deem it needless' to speci' fy or describe any.

lhe notch in the end 6 of the shackleis forrned with a square bottouf, so as toengage the bolt witla greater security. v

The notch or recess. in the end e is curved, 170 permit the movemeut of the tumbler wlxen acted on by the dog H.

Opemton.

The shankle havng been.appled to the fastening of a mail;hag, or any other object which t may be desired-to secure, is slipped into the sockets in the head of the look-case, being made to fit the same not too closely, but with sfficent accuracy to prevent undue .lateral movement, and to prevent the short end being forced in whle attached to the longer end. A

Tbe longer end e entering first. presses down the heeI of the tnmbler F, raising the nose out of the way of the bolt B, so that the latter is readily pressed back by the end 9.

- AS 5001] as the notches in the respective ends of the shackle corne opposite the bolt B, and the heel of the tumbler, these parts fall into the said notches, looking all immovably in position as illustrated in fi 1.

When the look is to be taken off the shackle is out, the short end being then detached from the longer one can be presscd clown onto the tail of the dog, the efiect of which is to throw up the tumbler F and release the bolt B.

' The end 6 may then be easly tnrned to the position shown in fig. 2, by which it presses back the bolt and becomes released therefrom.

The longer end 6 may be turned independentl; of the end 6 or dog H, and by its own pressure forces back the tumbler and releases itself therefrom.

I have thus provided means whereby each end ean be Withdmwu indepndently of the other, but: while the shackle remains intact il: is held with mach grea.ter flcurity than is possible with simple spring-catches.

.1. The tmbler F,' constructed with a projecting heel, j; and so constructed'and appled that it may be retracted by the action of the end 6 of the shackle, substantiafly as and for the purposes described.

2. The combination of the shackle E,bolt B, tumblr F, and dog H, 311 onstructed and arrahged to operate substantizflly as and for the purposes set; foxth.

To the above speeification of' my improved keyless lock I have signed my hand. this 11th day of J anuary, 1871.

Witmesses:

Ocmvms KNIGHT, H. C. ELLIOTI.

WILSON BOHANNN. 

